Patent GB-190609705-A (GB)
Title: Improvements in Machines for Manufacturing Heddles.
Inventor: FEHR WILLIAM
Filed: 1906-04-25
Granted: 1906-12-31
Abstract: 9705. Fehr, W. April 25. Making loom healds.-Relates to a machine for making healds from strip or wire stock and for threading them on to wires t, from which they may be easily transferred to heald frames. The stock b, after being flattened in places if of wire, is passed successively through a straightening-device or to apparatus C for punching the end and one or more intermediate slots, apparatus G for opening and swaging the metal at the ends of the slots as shewn in Fig. 38, mechanism for removing the fins b<3> if required, apparatus H for stamping or bending the healds so that when assembled they will be slightly separated as shown in Fig. 49, apparatus K for bending one side of each end slot up and one side down, and shearing-apparatus M. The stock is drawn forwards by fingers on a slide o<1> operated by a link o<5> and a variable-throw crank 0<10>, the finished heald being transferred by the grippers s<4>, s<10>, Figs. 2 and 81, to the wires t. Each punch d<1> is held by a plate d<10>, Fig. 8, and by bolts in a grooved support d<3> which can be adjusted along a frame c<2> and clamped in any position thereon by means of tapered screws d<13> arranged between a part d<5> of the support and a wedging- plate d<6>. The frame c<2> is reciprocated vertically by means of a cam on a shaft a<1>, Fig. 2. The punch passes through a stripping-plate e<7>, Fig. 19, and forces the punchings through the hole e<5> formed partly in each of two dies e<3>; e' held by a screw e<6> in a block e' which is clamped on the bed c<14>. The strip passes through the recess e<10> in the , plate e<7> and is kept central with the punch by a spring e<22>, Fig. 22; and fence e<21>, the spring being adjustably clamped by a plate e<24> and the fence being adjustable by means.of a screw e<26> and spring e<25> in a plate e<17> also clamped to the bed c<14>. Similar strip-guiding mems are arranged near to the succeeding parts of the combined machine. The swaging- dies g<1>, g<2>, Fig. 31, have their abutting faces slightly backed off towards their ends so as to form the strengthening-fins b<3>, Fig. 38; the upper die is carried by a drop lever g<4>, lifted by means of a bell-crank lever g<9> and a cam on the shaft a' limited in its descent by a stop g<17>, g<18>. The dies h<3>, Fig. 40, of the apparatus H have two or more sets of co-acting faces, are connected by a slotted link h<30>, and are moved laterally in their holders A<14>, h<20> by a rod i<6> and cam i<8>, so as to stamp or bend succeeding healds in different manners for the purpose already stated. The holder h<14> is adjustable in the standard h, and the holder h<20> is adjustable in a slide h<24> which is reciprocated by a lever i and a cam i<3> on the shaft i<5>, driven at half the speed of the shaft al from the shaft a<1>. The dies k<2>, k<3>, Fig. 53, for bending the two sides of the end slots in the healds upwards and downwards respectively are slidably mounted in their holders, and are kept in normal positions by springs k<23>. The lower die is recessed at k<4> and the upper fitted with a spring-pressed blade k<8> which passes through the slot in the heald and into the recess k<4>, and in so doing moves both dies into alinement with the slot in the heald. The upper die is operated by a lever and cam on the shaft a'. The punch and die m<21>, m<20>, Fig. 65, are shaped so that in separating a finished heald from the strip b, they round the ends of the strip and heald. Both punch and die are reciprocated by bell-crank levers m<2>, m<3>, Fig. 2, and a cam on the shaft a. When retracted, and before the strip is released by a finger n<3>, the slide o', Fig. 75, advances and its fingers o<2> seize the end of the strip. The strip passes through the groove in a bracket n<5> arranged on the entering side of the shearing- mechanism and is gripped therein and held during the punching, forging, stamping, bending, and shearing operations by the finger n<3> attached to a slide operated by the lever m<3>. The transferring- fingers s<4>, s<10> are mounted on a shaft r<3> carried by arms r<2> rocked by a rod r<12> , Fig. 2, and a cam a<12> on the shaft a'. As the sbaft r<3> is being moved from left to right, as seen in Fig. 2, a pinion r<4>, Fig. 75, gearing with a spring-retained segment r<6>, causes the shaft to rotate and so move the fingers from the position shown in Fig. 81 to that shown in Fig. 2, the rotation being arrested by a bar r<17> ; afterwards the fingers continue to move about the centre r<1> and slide, some above and some below the finished heald. As the die m<20> and its holder rise, a set-screw m<28> rocks a bell-crank lever r<19> and reciprocates a bar 1<20> which being connected to the bar r<17> by pins in inclined slots moves laterally, engages the screws s<2>, Fig. 81, and withdraws the catches s<8> from the spring-pressed fingers s<4> and allows. the same to grip the heald. The projections s<9> of the fingers s<4> work in slots in the fingers s<10> and limit the entrance of the heald b<12>.When the shaft r<3> is moved and rotated into the position shown in Fig. 81, the heald is threaded on to the wires t. The two sets of jaws u<9>, Fig. 88, holding the wires t are closed by springs u<10>, and are opened alternately to let the heald descend by a cam u<13> on the shaft a<1>, the rock-shaft u<7> and arms u<13>, which engage the tail ends u<11> of the bent levers u, pivoted at u<1> and provided with the jaws u<9>. When the upper jaws are opened, projections u<12> on them engage pins s<13>, Fig. 81, and slide the fingers s'‹ against the action of springs s<12>, thus freeing the heald. Pins 891 in the fingers s<10> act on levers which raise the fingers s<4>, these fingers being retained by the catches s<8> after the fingers s<10> have again been pushed outwards. The wires t, Fig. 89, are clamped at t<5>, but may be clamped at t<15> by levers t<7> and cams t<12> and unclamped at t<5> so that some healds may be transferred to a heald frame without necessitating the stoppage of the machine.